Buttonhole-making machine



C. M. CARR..

BUTTONHOLE MAKING MACHINE.

APPLICATIQNHLED JAN. I8, 1918.

1 ,333 ,832. Patented Mar. 16,1920.

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[Zar eJ/ Jar) C. M. CARR.

BUTTONHOLE MAKING MACHINE.

APPLICATION FILED JAN. 18, 191B.

Patented Mar. 16,1920.

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km 0 I UNITED STATES PATENT OFFICE.

CHARLES M. CARR, or SANDIEGO, CALIFORNIA.

BUTTONHOLE-MAKING MACHINE.

To all whom it may concern:

Be it known that I, CHARLES M. CARR, a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented an Improvement in Buttonhole-Making Machines, of

. operator the relative number of stitches that the machine'will make in a given size button-hole. -The number of stitches necessary to properly make a button-hole varies with the size of the button-hole, and provision is made in all button-hole making machines for adjusting it to cause the proper number of stitches to be made in a given size of button-hole; but, so far as I am informed, no devicehas been invented that indicatesthe position where the stitch regulator is to be placed so that'the'proper number of stitches will be used in the button-hole desired to be made. 7 It is desirable that such an indicator be applicable to any button-hole making machine without materially changing the structure or organization of the parts of the machine, or of the cutting, stitching or sewing mechanisms of the device.

For the purpose of providing an indicator of the class mentioned that is capable of accomplishing the end desired, and also have the necessary characteristics of adaptability to various machines, I have produced my invention, which consists of a means for showing on a graduated dial on the top of the base of the button-hole making machine in view of the operator, the point at which the stitch regulator must be set to furnish the predetermined number of stitches for any size button-hole to be made.

Specificationof Letters Patent.

atents Nos. 743,212 anding the button-holev making machine out of its-ordinary working positlon, as is at pres ent. required on button-hole making machines.

The structure and operation of ,d'e-

vice will be -more fully described in the specifications whichv follow, and it is illustrated in the accompanying drawings which.

form a part of my specification.

While I have shown my invention combined with a'standard Singer Sewing Mat-- chine Companys type of button-hole making machine, as shown in United States Patents Nos. 743,212 and 743,213, November 3, 1903,v

E. B. Allen, and have described this embodiment in these specifications, I do not wish to be limited by these specifications, as my device may be applied to any standard make of button-hole making machine without materially changing its structure. V

In the, drawingslike characters refer to like parts throughout.

Figure 1. is a plan view of my improved indicating finger and dial; Fig. 2 is a front elevational view of my device complete; Fig. 3 is a side elevational view of same showing in sectionthe dial; Fig. 4 is a detail plan view of the operating lever with a portion broken away; Fig. 5 is a sectional,

Patented Mar. 16, 1920. Application filed January 18, 1918. Serial No. 212,407. I l

elevational view of a portion of a standard Singer button-hole making machine with a portion broken away and showing my device attached thereto; Fig. 6 is a bottom plan view of the guide for my adjusting device;

Fig. 7 is a bottom plan view of a part of'a standard Singer button-hole making machine with my device attachedthereto and Fig. 8 is an elevational view of my device complete showing in section portions of the button-hole making machine. 7 7

Numeral 1, (Fig. 7) is the swinging arm of a button-hole making machine a, which is pivotally mounted at one end on the pivot 2 of said machine a, and is adapted to be swung on said pivot 2 for the purpose of imparting an intermittent rotary movement to the feed cam by an oscillating movement imparted to said arm 1 from the rock shaft 10 and a link 3. The link 3 is pivotally mounted at 4 on a pivot 5. The pivot 5 is pro" vided with a tapering head portion 6 which is adapted to reciprocate in the channel 7 of the swinging arm 1. The link 3 is secured on said pivot 5 by a nut 8. The link 3 is pivshaft mounted on said button-hole making machine, a link adjustably mounted at one end in a channel in said stitch regulator, and pivotally mounted on said rock shaft, a yoke member mounted on the end of said link, a support member provided with cylindrical bearings on each end, mounted on said yoke member, a toothed segment provided with bearings adapted to reciprocate in said cylindrical bearings, a shaft member provided with a toothed wheel adapted to be revolved by said toothed segment, an indicating finger mounted on said shaft and a graduated scale adapted to be mounted on said button-hole making machine immediately below said indicating finger.

4. The combination with a stitch regulator of a button-hole making machine, of a rock shaft mounted on said button-hole making machine, a link provided with a toothed segment and at one end pivotally mounted on said rock shaft, a shaft provided with a toothed wheel adapted to be revolved by the swinging of said link and said segment, a graduated dial adapted to be mounted on said button-hole making machine, an indicating finger mounted on said shaft, and adapted to indicate on said graduated dial the size of button-hole to be made.

In testimony whereof, I have hereunto subscribed by name.

CHARLES M. CARR. 

